Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Reexamination Certificate
2008-07-08
2008-07-08
Ruthkosky, Mark (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
C429S006000, C252S062200
Reexamination Certificate
active
07396616
ABSTRACT:
It is an object to provide a solid electrolyte and an electrochemical system using the solid electrolyte which has a little expansion (swelling) and whose strength does not decrease in case of positioning the solid electrolyte including a complex compound composed of an inorganic compound, polyvinyl alcohol, and water, in a wet condition. It is possible to use the solid electrolyte in a device such as a fuel cell or an electrolytic device used with the wet condition. The solid electrolyte has a little size variation even if humidity varies and has a low methanol permeability. The solid electrolyte is produced by replacing a part or all of hydroxyl groups of polyvinyl alcohol domain to groups each of which has a water absorption less than that of said hydroxyl group, in the solid electrolyte including a complex compound which is composed of polyvinyl alcohol, water, and at least one inorganic compound selected from silicic acid compound, tungstic acid compound, molybdic acid compound, stannic acid compound, and zirconic acid compound.
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Nippon Kodoshi Corporation
Ruthkosky Mark
Shlesinger & Arkwright & Garvey LLP
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